Table 1. Result from Univariate statistical analysis and ROC analysis for all quantitative variables.
| Variables | Aneurysms | ROC analysis | |||||
|---|---|---|---|---|---|---|---|
| Total | Ruptured | Unruptured | p value* | AUC (95%CI) | Threshold | p value # | |
| (n = 155) | (n = 69) | (n = 86) | |||||
| Size, mm | 3.81 (3.508) | 5.55 (3.261) | 2.84 (1.345) | <0.001 | 0.879 (0.824–0.934) | 4.217 | <0.001 |
| Neck width, mm | 3.84 (1.320) | 4.14 (1.529) | 3.61 (1.078) | 0.017 | 0.591 (0.498–0.683) | 3.759 | 0.053 |
| Surface area, mm2 | 38.87 (51.841) | 69.71 (88.644) | 27.84 (23.316) | <0.001 | 0.811 (0.742–0.879) | 38.83 | <0.001 |
| Volume,mm3 | 27.55 (57.591) | 60.41 (114.450) | 16.45 (20.497) | <0.001 | 0.785 (0.712–0.857) | 27.08 | <0.001 |
| Parent artery diameter, mm | 3.24 (0.985) | 3.06 (0.881) | 3.38 (1.044) | 0.041 | 0.576 (0.486–0.666) | 3.807 | 0.106 |
| Aspect ratio | 1.17 (0.523) | 1.56 (0.507) | 0.86 (0.263) | <0.001 | 0.918 (0.876–0.961) | 1.064 | <0.001 |
| Size ratio | 1.32 (1.273) | 1.88 (1.218) | 0.84 (0.582) | <0.001 | 0.876 (0.822–0.929) | 1.222 | <0.001 |
| WSSmean | 0.69 (0.266) | 0.53 (0.223) | 0.83 (0.284) | <0.001 | 0.834 (0.768–0.900) | 0.729 | <0.001 |
| WSSmax | 3.04 (0.757) | 3.04 (0.822) | 3.04 (0.706) | 0.984 | 0.519 (0.426–0.613) | 2.894 | 0.679 |
| WSSmin | 0.02 (0.037) | 0.01 (0.013) | 0.04 (0.063) | <0.001 | 0.799 (0.730–0.868) | 0.023 | <0.001 |
| OSI | 0.0075 (0.017) | 0.0109 (0.024) | 0.0058 (0.010) | <0.001 | 0.671 (0.587–0.756) | 0.005 | <0.001 |
| LSA, % | 0.65 (6.255) | 3.06 (13.990) | 0.07 (0.593) | <0.001 | 0.836 (0.774–0.898) | 0.599 | <0.001 |
WSS, wall shear stress; WSSmax, the maximum intra-aneurysmal WSS magnitude; WSSmin, the minimum intra-aneurysmal WSS magnitude; OSI, Oscillatory shear index; LSA, low wall shear area.
* Independent sample t test or Rank-sum test as appropriate. p<0.05 was considered statistically significant.
# p values for ROC analysis and p<0.05 was considered statistically significant.